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MANHATTAN -- Rapper Troy Ave is in custody following the deadly shooting at T.I.'s concert at Irving Plaza Wednesday night, according to police sources.

Police released surveillance video, which shows the gunman, Thursday afternoon.

The shooting began Wednesday night in the venue’s VIP area on the third floor before headliner T.I. was set to perform, according to WPIX.

It left Ronald McPhatter, 33, dead, and three others hospitalized — a 34-year-old man who was shot in the chest, a 26-year-old woman shot in the leg.

Ave, 30, who walked himself to a local hospital, suffered a gunshot wound to the leg.

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Hip-hop artists Maino and Uncle Murda were performing at the time of the shooting. T.I. had not come out on stage yet, concert goers said. He was expected to also perform at 1 OAK later Wednesday evening, but the NYPD shut down the club.

Police said there were metal detectors at the Irving Plaza but are investigating whether they were used. Several concert attendees complained of not being checked before entering the venue.